The TMCS1100-Q1 is a galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability. A low-drift, temperature-compensated signal chain provides < 1% full-scale error across the device temperature range.
The input current flows through an internal 1.8-mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor. This structure eliminates external concentrators and simplifies design. Low conductor resistance minimizes power loss and thermal dissipation. Inherent galvanic insulation provides a 600-V lifetime working voltage and 3-kVRMS basic isolation between the current path and circuitry. Integrated electrical shielding enables excellent common-mode rejection and transient immunity.
The output voltage is proportional to the input current with four sensitivity options. Fixed sensitivity allows the TMCS1100-Q1 to operate from a single 3-V to 5.5-V power supply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity is considered positive when flowing into the positive input pin. The VREF input pin provides a variable zero-current output voltage, enabling bidirectional or unidirectional current sensing.
The TMCS1100-Q1 draws a maximum supply current of 6 mA, and all sensitivity options are specified over the operating temperature range of –40°C to +125°C.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TMCS1100-Q1 AEC-Q100, 1% High-Precision, Basic Isolation Hall-Effect Current Sensor With ±600-V Working Voltage datasheet | PDF | HTML | 04 Jun 2021 |
| Application brief | Low-Drift, Precision, In-Line Isolated Magnetic Motor Current Measurements (Rev. A) | 24 Jul 2023 | ||
| Application note | TMCS110x Layout Challenges and Best Practices | PDF | HTML | 03 Dec 2022 | |
| White paper | Improve High-Voltage System Efficiency With Zero-Drift Hall-Effect Current Sense (Rev. A) | PDF | HTML | 15 Mar 2022 | |
| EVM User's guide | TMCS1100EVM User's Guide (Rev. B) | PDF | HTML | 25 Aug 2021 | |
| Functional safety information | TMCS1100-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 30 Mar 2021 | |
| Application note | Thermal Implementation Guide for In-Package Magnetic Current Sensors | PDF | HTML | 12 Jul 2020 | |
| Application brief | Precision Designs with Non-Ratiometric Magnetic Current Sensors | 01 Jul 2019 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
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